\section{Design Overview}
\fancyfoot[C]{Design Overview}
Figure \ref{fig:contextdiagram} provides the general user-system flow that occurs when users interact with a Siberia CMS server. The CMS is intended to serve as a dynamic go-between for creating user-viewable content as it is requested by visitors to the site.\newline \newline
The Siberia CMS web application reviews the request, retrieves content from the database and design files on the server, processes the content and design into a webpage, and returns it to the user's web browser.\newline \newline
The data layer (in this case an interface for an MS SQL Server database) receives a request for some data, which it locates and returns to Siberia CMS for further processing.

\begin{figure}[!ht]
  \centering
    \includegraphics[width=4in]{ContextDiagram.eps}
  \caption{A diagram outlining the main interaction flow between a user and a Siberia CMS server.}
\label{fig:contextdiagram}
\end{figure}

Figure \ref{fig:sysdiagram} shows the basic systems and the basic relationships between each system.

\begin{figure}[!ht]
  \centering
    \includegraphics[width=4in]{ArchitecturalDiagram.eps}
  \caption{A diagram outlining the relationships between the main systems of the CMS.}
\label{fig:sysdiagram}
\end{figure}
\begin{description}

\item[Plugins]Plugins add extra functionality to the CMS, while harnessing existing CMS functionality. Depending on the required functionality of the CMS-served site, plugins are added or removed.
\item[Display Repository]The Display Repository is an area in the server's filesystem known to the CMS that contains any necessary information for the presentation layer.
\item[Data Layer]Implementations of a data layer support the storage and retrieval of user content and system information on any storage medium and infrastructure.
\end{description}

%\begin{figure}[!ht]
%  \centering
%    \includegraphics[width=4in]{SubsystemDiagram.eps}
%  \caption{A diagram outlining the relationships between the subsystems and %subcomponents of the CMS.}
%\label{fig:subsysdiagram}
%\end{figure}
